Objective For establishing a effective method of gene polymorphism. Methods Polymorphism of CYP1A1 were detected by allele specific amplification and allele specific amplification-ELISA in this study.Results The results of two testing methods were same except one sample.PCR products were labeled with Dig in ASA-ELISA,then the PCR products were detected by specific and sensitive ELISA.The assay detection was 100-fold more sensitive than gel detection of ASA PCR products.Conclusion It was simple and short time,but it was more expensive.

OBJECTIVETo investigate the risk of hidden blood loss about applying rivaroxaban after total hip arthroplasty.

METHODSFrom October 2009 to May 2012,88 patients with femoral head necrosis were treated with primary total hip arthroplasty. All the patients were divided into Rivaroxaban group(44 cases)and control group(44 cases). There were 25 males and 19 females in the Rivaroxaban group, with an average age of (58.48 +/- 15.19) years old; in the control group,24 patients were male and 20 patients were female, with an average age of (61.11 +/- 13.54) years old. The patients in the Rivaroxaban group took Rivaroxaban orally from the first day after operation with a dose of 10 mg each day, and treatment course was 14 days. The patients in the control group took placebo orally at the same time. Dominant blood loss and transfusion were recorded, blood routine examinations were taken before operation and at 3 days after operation. The total blood loss and hidden blood loss were calculated according to the formula.

RESULTSThe mean total blood loss was (1509.56 +/- 325.23) ml and the hidden blood loss was(581.47 +/- 215.01) ml, accounting for (37.88 +/- 10.42)% in the Rivaroxaban group. The mean total blood loss was (1262.30 +/- 397.95) ml and the hidden blood loss was (395.59 +/- 97.33) ml, accounting for (30.62 +/- 0.20)% in the control group. The total blood loss, hidden blood loss and transfusion in the Rivaroxaban group was significantly more than those in control group,b ut there was no significant difference on dominant blood loss between two groups.

CONCLUSIONRivaroxaban increased the overall bleeding risk of total hip arthroplasty, especially hidden bleeding risk, which should be careful used.

Arthroplasty, Replacement, Hip ; adverse effects ; Case-Control Studies ; Female ; Hemorrhage ; etiology ; prevention & control ; Humans ; Male ; Middle Aged ; Morpholines ; pharmacology ; Postoperative Complications ; prevention & control ; Risk ; Rivaroxaban ; Thiophenes ; pharmacology ; Time Factors

Objective To investigate the regulative effect of cyclooxygenase-2 (COX-2) 3'-UTR in HT29 colon cancer cells. Methods Total RNA was extracted from HT29 colon cancer cells and used as a template to amplify COX-2 gene by reverse transcription polymerase chain reaction. Using PCR technique to construct a series of luciferase reporter gene expression vectors containing various regions of the 3'-UTR of COX-2 (including the whole gene region, gene region between 1 to 156 bp, gene region between 1 to 347 bp, gene region between 1 to 1006 bp, gene region between 156 to 347 bp and gene region between 157 to 2217 bp). These reporter gene expression vectors and pRL-SV40 were co-transfected in HT29 colon cancer cells by Lipofectamine 2000. The relative luciferase activity of the HT29 colon cancer cells was tested. All data were analyzed via t test. Results The luciferase activity was reduced by 70.4%, 37.4%, 64.8% and 24.2% in HT29 colon cancer cells transfected with the whole COX-2 gene region, gene region between 1 to 156 bp, gene region between 1 to 347 bp and gene region between 156 to 347 bp, respectively (t = 6.13, 7.73, 9.75, 3.92, P < 0.05). No obvious changes of luciferase activity were observed in HT29 colon cancer cells transfected with gene regions between 1 to 1006 bp and between 157 to 2217 bp (t = 0.13, 0.01, P > 0.05). Conclusions A region between 156-347 bp in the 3'-UTR of COX-2 has been found which can down-regulate the expression of COX-2 with the cooperation of the ARE element. The 3'-UTR of COX-2 contains several control elements that regulate the expression of COX-2 in colon cancer cells.

Objective To explore the serum levels of growth differentiation factor-15 (GDF-15) in patients with acute exacerbation of chronic heart failure (CHF) and its correlation with other common indexes,to provide reference for its clinical diagnosis,treatment and prognosis.Methods Two hundred patients with acute exacerbation of CHF were selected as CHF group,and 100 matched healthy volunteers were selected as control group.Serum levels of GDF-15 and N-terminal pronatriuretic peptide (NT-proBNP) were detected,and left ventricular end diastolic diameter (LVESD),left ventricular end diastolic diameter (LVEDD),and left ventricular ejection fraction (LVEF) were measured by echocardiography within 2 hours after admitted to hospital,and after the symptoms improved of CHF group,and on health examination day of control group.Patients in CHF group were followed up to record CHF related adverse events.Correlations between GDF-15 and other indicators were analyzed by Spearman correlation analysis,and the clinical value of serum GDF-15 on diagnosing CHF was analyzed by the receiver operating characteristic curve (ROC) and the area under the curve (AUC).Results The serum levels of GDF-15 and NT-proBNP in each time-point of CHF group were all higher than those of control group (t =4.70 ～ 7.11,P ＜ 0.05 orP ＜ 0.01).The serum levels of GDF-15 and NT-proBNP had negative correlation with LVEF (r =-0.539,-0.572,P ＜ 0.01),and had positive correlation with LVESD,LVEDD,and NYHA cardiac functional grading (r =0.505 ～ 0.861,P ＜ 0.01).Serum GDF-15 had positive correlation with serum NT-proBNP (r =0.528,P ＜0.01).With the increase of serum GDF-15 level,CHF group's readmission (rate) and death (rate) were both increased (x2 =36.86,26.59,P ＜0.01).AUC of predicting readmission risk by serum GDF-15 was 0.822 (95％ CI:0.719 ～0.890,P ＜0.01),and the best predictive cutoff point was 2 876.30 ng/L (sensitivity was 91.86％,specificity was 73.27％).AUC of predicting mortality risk was 0.816 (95％ CI:0.715 ～ 0.885,P ＜ 0.01),and the best predictive cutoff point was 3 487.05 ng/L (sensitivity was 91.72％,specificity was 69.05％).Conclusions Serum GDF-15 level in patients with acute exacerbation of CHF is higher,decreases with symptoms improvement,has positive correlation with LVESD,LVEDD,and NYHA cardiac functional grading,and has negative correlation with LVEF,has higher sensitivity on predicting CHF-related adverse events,and the mechanism may be related to the activation of SMAD pathway.Therefore,it may be a promising biomarker for clinical diagnosis and prognosis of cardiovascular diseases.

Objective To explore the relationships between serum adiponectin,IL-6 and hypoxic-ischemic encephalopathy(HIE) degree in newborn infant.Methods Enzyme-linked immunoabsorbent assay was used to detect the serum adiponectin and IL-6 in 58 neonatal HIE and 26 neonates without HIE.And all the data were processed by SPSS 10.0 software.Results The level of serum adiponectin in moderate and severe HIE at acute stage were significantly lower than that of mild and control groups(Pa0.05).The level of serum IL-6 in moderate and severe HIE at acute stage were significantly higher than that of the mild and control groups(Pa0.05).The level of adiponectin were significant negative correlation with IL-6(r=-0.852 P

Objective To discuss the expansion model of the eyeball and investigate the morphologic characteristics of high-my- opic eyeball through the dimensional measurement in high-myopia and emmetropia by MRI. Design Case controll study. Participants Thirty-two emmetropes (60 eyes) and 33 high myopes (60 eyes) were enrolled, without eye diseases and history of ocular surgery or in- jury. Methods 60 high-myopic eyes and 60 emmetropic eyes were measured with MRI (I.5T,PHILIPS) to get the data of three inner ocular dimensions, intraocular volume and the volume of different parts. Main Outcome Measures Three dimensions and volumes of eyeballs. Results The average value of axial (28.16?2.80 mm), horizontal (22.87+1.23 mm) and vertical length (23.40?0.99 ram) of high-myopic eyes were much bigger than those of emmetropic eyes(P=0.000), especially the axial length( with difference of 5.38 mm); The axial length was correlated with refractive error (0.36 mm/D,r~2=0.88, P=0.000). The average value of the whole ocular volume (7. 46?0.89 ml) and vitreous volume(6.90?0.8 ml) of the high myopic eyes were bigger than those of emmetropic eyes(P=0.000), while ante- rior segment volume and lens volume were about the same as that of emmetropic eyes (P=0.220, P=0.630). Conclusions The three di- mensions of high-myopic eyes were significantly longer than that of emmetropic eyes. In high myopes, the increased vitreous volume lead to the increase of the whole ocular volume. There may be two models in the ocular expansion of high myopia: global expansion and axial elongation expansion. More serious refractive error cause more obvious expansion in axial elongation.

Objective To observe the inhibitory effects of sub-MIC matrine alone and in combination with erythromycin on Staphylococcus epidermidis biofilms and their influences on morphological changes of the biofilms.Methods Minimum inhibitory concentrations (MIC) of matrine and erythromycin against Staphylococcus epidermidis were determined by the serial dilution method,antibacterial activity of matrine combined with erythromycin against planktonic S.epidermidis was evaluated by the checkerboard method.S.epidermidis biofilms were constructed in vitro,XTT reduction assay was used to evaluate influences of sub-MIC matrine alone and in combination with erythromycin on metabolism and adhesion of S.epidermidis biofilms,and scanning electronic microscope(SEM) was applied to observe the morphological and the structural changes of the biofilms.Results The MIC of erythromycin to S.epidermidis was 7.8125 μg/ml,while the MIC of matrine was greater than 1000 μg/ml,besides,a synergistic effect between erythronmycin and matrine on planktonic S.epidermidis was shown (FIC＜0.5).The sub-MIC matrine had no significant inhibitory effect on adhesion of S.epidermidis,and also the combination of the two agents was better than was used alone.However,the sub-MIC matrine had inhibitory effects on metabolism and morphology of S.epidermidis biofilms,and the combination of the two agents was weaker than was used alone.Conclusion Both the sub-MIC matrine and erythromycin had a significant inhibitory effect on S.epidermidis biofilm formation.Combination of the two agents showed synergistic effects on plankton and adhesion of S.epidermidis,but showed no synergistic effect on metabolism and morphology of the biofilms.

Objective:To evaluate the value of Cook MOB-15 system in guiding wire insertion during endoscopic retrograde cholangiopancreatography (ERCP). Methods: The clinical data of 51 patients who received Cook MOB-15 system-guided wire insertion during ERCP between Jan. 2005 to Dec. 2007 were retrospectively analyzed. Forty patients who received conventional ERCP catheter for malignant jaundice between Jan. 2002 and Dec. 2004 were taken as control. The successful insertion rates were compared between the 2 groups. Results: The successful insertion rate was 90.2% (46/51) in the Cook MOB-15 system group and 72.5% (29/40) in the conventional group; there was significant difference between the 2 groups (P

BACKGROUND:Previous research indicated that iron-fluorouracil-phenanthroline complex has good antitumor activity in vitro, which can inhibit the proliferation of human cancer cels. OBJECTIVE:To detect the antitumor activity and toxicity of iron-fluouracil-phenanthroline complex, [Fe(5-Fu)2(Phen)SO4],in vivo. METHODS:A total of 40 Kunming mice were randomly divided into four groups, which were intraperitoneally injected with 72, 102.9, 147, 210 mg/kg [Fe(5-Fu)2(Phen)SO4] and the half lethal dose of the complex was detected. One day after the establishment of mouse S180 sarcoma models, the model mice were randomly divided into eight groups, and administered with the intraperitoneal injection of 15 mg/kg (low dose group), 30 mg/kg (middle dose group), 60 mg/kg (high dose group) [Fe(5-Fu)2(Phen)SO4], normal saline (negative control group), cisplatin (positive control group), 5-fluorouracil, iron-salt and phenanthroline, respectively. The injection was done once a day, lasting for 7 days. The weight of sarcomas, body weight, the main organ coefficient and histopathological changes of the main organs were detected. RESULTS AND CONCLUSION: The half lethal dose of [Fe(5-Fu)2(Phen)SO4] was 103.9 mg/kg. Compared with the negative control group, high dose group, positive control group and 5-fluorouracil could significantly inhibit the growth of the tumor (P< 0.05 orP< 0.01), and the effect of high dose group was the most obvious (P < 0.01). Compared with cisplatin, 60mg/kg [Fe(5-Fu)2(Phen)SO4] had a weaker inhibitory effect on the kidney, but higher inhibitory effect on the liver, spleen and thymus, indicating the complex has a lower nephrotoxicity, but stronger immunotoxicity and hepatotoxicity than cisplatin.

BACKGROUND:Anticancer drug and organic metal complexes wil form a new structure or a change in ion concentration, thus changing both the activity and toxicity to produce a synergistic effect. OBJECTIVE:To synthesize new high-efficient and low-toxic metal-fluorouracil complexes as anticancer drugs. METHODS:Copper, zinc and iron salts and fluorouracil were used to synthesize four copper, zinc and iron-fluorouracil complexes that were [Cu(5-Fu)2Cl2], [Cu(5-Fu)2(NO3)2], [Fe(5-Fu)3]SO4 and [Zn(5-Fu)2Cl2]. Preliminary chemical structures of the four complexes were confirmed by elemental analysis and mass spectrometry. Their inhibitory activity on human cancer cells, human leukemia cellline K562 and human colon cancer cellline HCT-116, was measured by MTT colorimetric assay. RESULTS AND CONCLUSION:[Cu(5-Fu)2Cl2], [Cu(5-Fu)2(NO3)2], [Zn(5-Fu)2Cl2] and [Fe(5-Fu)3SO4] were successful y synthesized. These four complexes at a mass concentration of 0.1-100 mg/L inhibited the proliferation of K562 and HCT-116 to different extents. The IC 50 values of these four complexes on K562 and HCT-116 cells were lower than those of fluorouracil, and their cytotoxicity was 1.5-7.8 times higher than that of fluorouracil. To conclude, copper/iron/zinc-fluorouracil complexes exhibit synergic inhibitory effects on cancer cellproliferation.